Take a look at some of Thursday's midday movers:
Google plummeted after its third-quarter earnings missed Street expectations by over a dollar.
Apple fell after BMO cut its iPhone current-quarter shipment view by 8 percent to 46 million units and lowered its price target on the stock by $20 to $730.
Insurance stocks, including Ace Limited, Chubb, CNA Financial and Allstate all rose after Travelers beat earnings expectations.
Mellanox plummeted after the company handed in a disappointing fourth-quarter outlook.
Abbott Labs slid after its partner said it was halting a late-stage trial of its potential blockbuster kidney disease drug.
American Eagle Outfitters moved higher after Wells Fargo upgraded the teen retailer to "outperform" from "market perform" and raised its price target to $26 to $27 a share from $21 to $22 a share.
Union Pacific rose after the railroad company posted a 15-percent gain in profits.
KeyCorp moved higher after the company reported an expansion of its net interest margin.
BB&T fell after the bank reported weaker-than-expected earnings.
Supervalu rose after the grocery chain said it received numerous interest from third parties for its business.
Align Technology tumbled after the dental-products maker forecast weaker-than-expected fourth-quarter earnings.
Aegerion hit an 18-month high after an advisory FDA committee recommended approval of the company's rare cholesterol disorder drug.
Hertz fell after the FTC asked for more time to review its proposed $2.5 billion takeover of its discount rival Dollar Thrifty .
LabCorp lost ground after the company said it expects 2013 to be a very difficult year.
Boston Scientific fell after the medical device maker reported a net loss and warned of continued weakness in the fourth quarter.
Juniper Networks came off its highs as takeover speculation was questioned. Shares were higher earlier in the session amid talk that EMC was a potential buyer of the tech company.
Orient-Express Hotels surged following news that Indian Hotels, which owns a 6.9 percent stake in the company, was seeking to buy the rest.
Select Comfort plummeted despite stronger-than-expected earnings. Piper Jaffray said that weakness in the company's stock following the results was caused by its "decision to accelerate its investments, as well as confusion about its fourth quarter sales guidance and the number of mattresses it sold."
(Read More: CNBC's Market Insider Blog )
—By CNBC's Rich Fisherman.
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